Vassiliki A. Boussiotis, MD PHD
Hematology & Oncology Physician · Boston, MA
Vassiliki A. Boussiotis, MD PHD is a hematology & oncology physician with a practice address in Boston, Massachusetts, and NPI 1861474215, issued on Nov 18, 2005. Check the license (Massachusetts 220011, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Vassiliki A. Boussiotis
- Credential
- MD PHD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 220011 MA
Self-reported in NPPES; status is on the state search - Practice location
- 100 Blossom St, Boston, MA 02114
- Phone
- (617) 724-3200
- Enumerated
- Nov 18, 2005
- Record last updated
- Jun 24, 2011 (not updated in 15 years: call before relying on the address or phone)
- Medicaid ID
- 2096030 MA
- Medicare enrollment
- Enrolled (PECOS I20050120000857); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 461 in Massachusetts → Look up another NPI →
Also registered at 100 Blossom St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Roby Bhattacharyya, MD, PHDInternal Medicine Physician1073718672
- Paul Busse, PHD MDTherapeutic Radiology Physician1073587291
- George Canellos, MDHematology & Oncology Physician1114908027
- Annie Chan, MDRadiation Oncology Physician1306874169
- Noah Choi, MDTherapeutic Radiology Physician1467434019
- Maureen Doran, RN, MPHRegistered Nurse1154539583
Verify Vassiliki A. Boussiotis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 220011Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- Harvard Medical Faculty Phys AT Beth Israel Deaconess Med Ctr IncBoston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Vassiliki A. Boussiotis among 461 hematology & oncology physician records in Massachusetts
Vassiliki A. Boussiotis, MD PHD is one of 461 hematology & oncology physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 86% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1980 · median 2004 among the 303 with a school on file
- Record last updated2011 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Massachusetts
There are 461 hematology & oncology physician records in Massachusetts.
All 461 in Massachusetts → Every provider in Boston → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Marcia Browne, MDBoston, MA 021141639146210
- George Canellos, MDBoston, MA 021141114908027
- Yi-Bin Chen, MDBoston, MA 021141356332639
- John ClarkBoston, MA 021141871550244
- Lauren Dias, MDBoston, MA 021141215928346
- Kira Gritsman, MDBoston, MA 021141174598148
- David HarmonBoston, MA 021141851358352
- Beverly Moy, MDBoston, MA 021141932199106
Common questions
What is Vassiliki A. Boussiotis, MD PHD's NPI number?
Vassiliki A. Boussiotis, MD PHD's National Provider Identifier (NPI) is 1861474215, issued on Nov 18, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Vassiliki A. Boussiotis, MD PHD located?
The NPPES record lists a practice address at 100 Blossom St, Boston, MA, 02114. Phone: (617) 724-3200. Providers update this record themselves, so call before visiting.
How can I verify Vassiliki A. Boussiotis, MD PHD's license?
NPPES lists Massachusetts license number 220011, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.